fix: don't check non-unified topologies for session support check

mongodb · Aug 13, 2019 · 2bccd3f · 2bccd3f
1 parent 808cf37
commit 2bccd3f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/core/cursor.js b/lib/core/cursor.js
@@ -586,7 +586,7 @@ Cursor.prototype._initializeCursor = function(callback) {
   const cursor = this;
 
   // NOTE: this goes away once cursors use `executeOperation`
-  if (cursor.topology.shouldCheckForSessionSupport()) {
+  if (cursor.topology.description != null && cursor.topology.shouldCheckForSessionSupport()) {
     cursor.topology.selectServer(ReadPreference.primaryPreferred, err => {
       if (err) {
         callback(err);